In the title compound, C(14)H(11)N(3)O(3), the chromene ring is almost planar, with a maximum deviation of 0.065 (2) Å from the mean plane for one of the C atoms. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops. The dimers are linked by C-H⋯N and C-H⋯O inter-actions into a three-dimensional network. An aromatic π-π stacking inter-action, with a centroid-centroid distance of 3.562 (10) Å, is also observed.